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' 4 Sheets-Sheet 1. K. F. WILLKOMM 8v C. SCHUMANN.

ORE UONGENTRATOR. N0. 313,145. Patented Mar. 3, 18

(No Model.)

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' 4 Sheets-Sheet 2.

K. P. WILLKOMM 8u C.l SCHUMANN.

, URE ONCENTRATOR.

No. S13-,145. i Patented Mar. 3, 1885.

(No Model.)

(No Model.) 4 Sheets-Sheet 4.

K. 1. WILLKOMM 8v C. SOHUMANN.

l ORB GONCENTRATOR. No. 313,145. Patented Mar. 3,1885.

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KARL FRIEDRICH VILLKOMM AND, CARL' SCHUMANN, OF FREIBERG,

SAXONL GERMANY.

ORE-CONCENTRATCR.

.PECIFECATEN forming part of Letters Patent No. 313,145. dated March 3, 1385.

Application filed May 26, 1884. (No model.)

To LZZ whom z' may concern.'

Be it known that we, KARL FRIEDRICH WILLKOMM and CARL SCHUMANN, citizens of Germany, residing at Freiberg, Saxony, inthe Empire of Germany, haveinvented a new and useful Improvement in Orc- Concentrators, of which the following is a specification.

Our improvement relates to the dry-process concentrators; and it consists in the peculiar construction and arrangement of the parts composing the machine, as hereinafter particularly described, and pointed out in the claims.

In the accompanying drawings, Figure l is a side elevation of our improved ore-concentrator. Fig. Il is a top view ofthe same. Fig. III is alongitudinal section ofthe same. Fig. lV is a vertical cross-section at line Y Z, Fig. Il. Fig. V is an end view of the apparatus, and Figs. VI, VII, VIII, and IX areside View, end view, topview, and cross-section of the air-nozzle F on enlarged size.

Similar letters represent similar parts in all the figures. f

B is a suitable box or chamber, the bottom of which is made inclined toward one side, and divided in its lower part through suitable partitions, Z), into a number of bins of suitable sizes, in which the concentrated ore is collected. Suitable doors, N, Fig. I, are arranged in each bin for the purpose of removing the ore. At the after end of the chamber a larger bin or chamber, C, is provided by means of the partitionwall b, extending nearly to the top of the chamber, and connected with the flue C, through which the air escapes. Near the forward end of the chamber B a hopper or receiver, A, is arranged to hold the pulver'ized ore, and provided at its bottom with gates a a, to regulate the flow of ore from the receiver. At the front of the chamber A the air-pipes G G are arranged. The lower pipe, G, is attached to the main air-pipe D, and is provided with a suitable cock, d, to regulate or stop the passage of the air when desired. The upper pipe, G', enters the chamber B, and is provided at its end with the discharge-nozzle F. The lower end of this pipe G connects with the lower pipe, G, by passing through a suitable stuffing-box, f, to allow this pipe G', together with its discharge-nozzle F, to be moved upward or downward, so as to bring the discharge-nozzle F nearer to p or farther away from the bottom of the receiver A. The upper end of the pipe G is for that purpose attached to asuitable sliding block, H, moving in guides fast to the outside of the chamber B, and connected to a screw, E, operated by a suitable hand-wheel,@,whereby this sliding block H, and consequently the pipe G,with dischargenozzle F, can be raised or lowered, as may be desired, to bring the current of air discharged at the mouth of the nozzle F nearer to or farlher away from the under side of the receiver A. The regulatinggates a a at the bottom of the receiver A consist of two valves, c c, hinged at the outer sides and meeting when closed in the central part. The spindles of these valves are provided with leversac, and connected through rods m m and rod o with a lever, M, by which arrangement the position of the valves a a can be regulated and the width of the discharge increased or diminished, as may be desired. The airdischarge nozzle F consists of a cylindrical chamber, 71., closed at the ends and provided with a large longitudinal opening, p, extending the whole length of the chamber 7L. The length of this opening, and consequently of the chamber h, should be in excess of the length of the discharge-opening formed by the gates c a at the bottom of theY receiver A. Upon the outer surface of this cylindrical chamber h two segments, kl, are fitted, hinged to the ends oi' the chamber h and capable of turning freely. rlh'ese segments are provided with straight flanges la Z, diagonally inclined toward each other, so that their outer ends meet and form a bellvshaped mouth, the inner end of which connects with the opening p in the chamber 7L. One of these segments, preierably the lower segment, L, is provided with projecting side flanges, la, between which the lange Z works to prevent the escape or" Iair at the sides. To each of these segments a projection, r r', is attached, connected to suitable screw-rods, s s', passing through the sliding block H to the outside of the chamber, and

operated by suitable hand-wheels, .fr an. By means of these rods s s the segments 7c Z may be moved so as to increase the width of escapeopening at the'extreme ends of the flanges k Z, or to decrease the same, as may be desired. At the same time these segments may be moved to direct the current of air to any desired an gle, as may be found most advantageous in regard to the nature of the ore under treatment. The successful operation of this concentrator depends,according to the nature of ore under treatment, first, on the size ofopening of the gates a a at the under side of the receiver; second, on the quantity and force of the air; third, on the angle at which the air strikes the falling mass of ore, and, fourth', on the distance at which the air-blast strikes the falling mass. All these may be easily changed and regulated by the several arrangements above described. The falling pulverized ore is met by the airblast of the required strength, volume, and

the necessary angle, and is then carried through the chamber B, falling according to the gravity of its particles into the several partitions or bins formed in the bottom of the chamber B, the lighter being carried the farthest. The ne dust will pass into the chamber C at the end,where it Wi1lcol1ect,vvhile the air escapes through the flue C.

What We claim as our invention, and desire to secure by Letters Patent, is-

l. The herein-described ore-concentrator, comprising the chamber B, the lower part of which is divided into suitable bins by partition-walls b, and the end chamber, C, the receiver or hopper A, the regulating-valves or gates a a at the under side of the receiver A, the air-pipes G G, sliding block H, regulating-screw E, and end nozz1e,-F,with segments la and Z, and means of operating the regulating-Valves a a and segments k Z, the Whole being arranged to operate in the manner and for the purpose substantially as described.

2. In an ore-concentrator, the herein de scribed discharge-nozzle F, consisting of the cylindrical chamber h, with longitudinal opening p, segments k and Z, With straight flanges kZf, and side flanges, lc, on one of said segments, and projections r r', in combination With screw-rods s s', and suitable hand-wheels. x or', for operating the same, substantially as and for the purpose set forth.

In testimony whereof We have signed our names to this specification in the presence of two subscribing Witnesses.

KARL FRIEDRICH WILLKOLNIM. CARL SCHUMANN.

' Witnesses:

OsWALD SCHMIDT, HERMANN NAUNDORF. 

